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Integrity Protection for the Kerberos Error Message

Document Type Expired Internet-Draft (cat WG)
Expired & archived
Authors Gene Tsudik , Brian Tung , Matt Hur , Ari Medvinsky
Last updated 1997-03-26
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The Kerberos error message, as defined in RFC 1510, is transmitted to the client without any integrity assurance. Therefore, the client has no means to distinguish between a valid error message sent from the KDC and one sent by an attacker. This draft describes a method for assuring the integrity of Kerberos error messages, and proposes a consistent format for the e-data field in the KRB_ERROR message. This e-data format enables the storage of cryptographic checksums by providing an extensible mechanism for specifying e-data types.


Gene Tsudik
Brian Tung
Matt Hur
Ari Medvinsky

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)